/*
 * Copyright 2023 OpenSPG Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied.
 */

package com.antgroup.openspg.core.schema.model.identifier;

/** This enumeration class defines identity type in SPG framework */
public enum SPGIdentifierTypeEnum {
  /** SPG type, such as EntityType, ConceptType, EventType etc. */
  SPG_TYPE,

  RELATION,

  /** SPG triple, such as Property, Relation and SubProperty etc. */
  SPG_TRIPLE,

  /** Concept instance */
  CONCEPT,

  /** Predicate in SPO triple */
  PREDICATE,

  /** Operator define on SPG type */
  OPERATOR
}
